Here's my take:
At this stage of production, it is impossible for us to know what will be with a movie. You can say it's a terrible concept, but who thought The Lego Movie would be huge when it was first announced? You can say the casting makes no sense, but Heath Ledger, Michael Keaton, yadda yadda yadda. You can say the production schedule sounds like a nightmare, but Jaws and Star Wars had terrible productions. Even a set photo, while it may give you an idea of the costumes and effects they're using, still gives you an incomplete view of what the final product will be.
In my mind, it's when you see an official photo or, better yet, a trailer - when you see a sample of what will actually be on screen - that you can begin to fairly judge a movie. Yes, trailers lie, but they're still portraying what the filmmakers consider the best aspects of the movie, and if you hate those aspects, you probably won't like the movie itself any better.
So right now, I can't judge this movie, because I have next to no idea how everything they're talking about will play onscreen. It could be amazing, it could be just passable, it could even be god-awful...but I won't know until I see the characters move, hear them talk, get a sense of the tone and atmosphere the movie is trying to convey. If it seems like something I can't support - if they make it look like a dumb stoner comedy or, worse, a boring action movie - I will know to give up on it and not waste my time and money any further. If, on the other hand, it looks like an enjoyable film that shows an awareness of its source material, I might be interested to take a look. It's that simple.
That's really all I have to say at this point.